Paytm — fraud call with paytm details

Address:

Lucknow, Uttar Pradesh, 226024

A fake call from paytm with full details of my paytm account he said that you have won gift from paytm on order made earlier .four people sortlisted and you are one of them. He verifed my order id and told to shop for 4000 and you will receive 30%discount and gift i.e iphone 7 .then he give account number and told to transfer 4000 into account and ypu will receive your gift on 19 july.
Caller detail
number -[protected]
Name- Ravi
Paytm has shared my account details which led me to believe that it was a geniune call.
I called paytm and they informed me that it was a fake call, they even said that my money will be refunded but before giving the reference no. they dismiss the call.Now whenever i am trying to call paytm they are not receiving the call.
I am just wasting my money.
My details
Name-Shubham rai
Paytm number-[protected]
[protected]@gmail.com
Please help